Open setaur opened 6 months ago
The monitor is returning reply packets that are entirely zero, or more precisely the video adapter is reading zeros from the I2C bus after it puts a request packet on the bus.
First, option --ddc will report DDC data errors..
I'm not optimistic, but some things to try.
Thanks for the answer. Yes, both laptop and monitor have VGA, but unfortunately I don't have cable at this time. I will try, when I get one. It looks like all those commands failed to produce anything useful:
/usr/local/bin# ./ddcutil --ddc detect
DDC: All zero response detected in ddc_i2c_write_read_raw
DDC: All zero response detected in ddc_i2c_write_read_raw
DDC: All zero response detected in ddc_i2c_write_read_raw
DDC: All zero response detected in ddc_i2c_write_read_raw
DDC: All zero response detected in ddc_i2c_write_read_raw
DDC: All zero response detected in ddc_i2c_write_read_raw
DDC: All zero response detected in ddc_i2c_write_read_raw
DDC: All zero response detected in ddc_i2c_write_read_raw
DDC: All zero response detected in ddc_i2c_write_read_raw
DDC: All zero response detected in ddc_i2c_write_read_raw
Invalid display
I2C bus: /dev/i2c-5
DRM connector: card0-HDMI-A-1
EDID synopsis:
Mfg id: AOC - UNK
Model: 2475W1
Product code: 9333 (0x2475)
Serial number: P08H4QA007082
Binary serial number: 16843009 (0x01010101)
Manufacture year: 2017, Week: 16
DDC communication failed. (getvcp of feature x10 returned Error_Info[DDCRC_RETRIES in ddc_write_read_with_retry, causes: DDCRC_READ_ALL_ZERO(10)])
Invalid display
I2C bus: /dev/i2c-7
DRM connector: card0-eDP-1
EDID synopsis:
Mfg id: CMN - Chimei Innolux Corporation
Model:
Product code: 5565 (0x15bd)
Serial number:
Binary serial number: 0 (0x00000000)
Manufacture year: 2012, Week: 17
This is a laptop display. Laptop displays do not support DDC/CI
/usr/local/bin# ./ddcutil --disable-dynamic-sleep --sleep-multiplier 3 detect
Invalid display
I2C bus: /dev/i2c-5
DRM connector: card0-HDMI-A-1
EDID synopsis:
Mfg id: AOC - UNK
Model: 2475W1
Product code: 9333 (0x2475)
Serial number: P08H4QA007082
Binary serial number: 16843009 (0x01010101)
Manufacture year: 2017, Week: 16
DDC communication failed. (getvcp of feature x10 returned Error_Info[DDCRC_RETRIES in ddc_write_read_with_retry, causes: DDCRC_READ_ALL_ZERO(10)])
Invalid display
I2C bus: /dev/i2c-7
DRM connector: card0-eDP-1
EDID synopsis:
Mfg id: CMN - Chimei Innolux Corporation
Model:
Product code: 5565 (0x15bd)
Serial number:
Binary serial number: 0 (0x00000000)
Manufacture year: 2012, Week: 17
This is a laptop display. Laptop displays do not support DDC/CI
/usr/local/bin# ./ddcutil --use-file-io detect
Invalid display
I2C bus: /dev/i2c-5
DRM connector: card0-HDMI-A-1
EDID synopsis:
Mfg id: AOC - UNK
Model: 2475W1
Product code: 9333 (0x2475)
Serial number: P08H4QA007082
Binary serial number: 16843009 (0x01010101)
Manufacture year: 2017, Week: 16
DDC communication failed. (getvcp of feature x10 returned Error_Info[DDCRC_RETRIES in ddc_write_read_with_retry, causes: DDCRC_READ_ALL_ZERO(10)])
Invalid display
I2C bus: /dev/i2c-7
DRM connector: card0-eDP-1
EDID synopsis:
Mfg id: CMN - Chimei Innolux Corporation
Model:
Product code: 5565 (0x15bd)
Serial number:
Binary serial number: 0 (0x00000000)
Manufacture year: 2012, Week: 17
This is a laptop display. Laptop displays do not support DDC/CI
Hello. I'm trying to use ddcutil to control external monitor AOC I2475PXQU connected via hdmi cable into laptop Lenovo z510 with Debian 11 Bullseye onboard, but I'm hitting into a wall. I have installed from Debian repository ddcutil version 0.9.9 and also compiled and installed from this site ddcutil 2.1.3. Both failed to control the monitor. Function DDC/CI is enabled in a AOC settings. Manual for this monitor can be accessed here: https://manuals.coolblue.nl/eb/aoc-bundel-collectie.pdf
ddcutil 0.9.9:
ddcutil_0.9.9-interrogate.txt
ddcutil 2.1.3
ddcutil_2.1.3-interrogate.txt
Can anything be done to make this function work?